2582125131805 has 4 divisors (see below), whose sum is σ = 3098550158172. Its totient is φ = 2065700105440.

The previous prime is 2582125131787. The next prime is 2582125131809. The reversal of 2582125131805 is 5081315212852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1839243178969 + 742881952836 = 1356187^2 + 861906^2 .

It is not a de Polignac number, because 2582125131805 - 2¹¹ = 2582125129757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2582125131809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258212513176 + ... + 258212513185.

It is an arithmetic number, because the mean of its divisors is an integer number (774637539543).

Almost surely, 2^{2582125131805} is an apocalyptic number.

It is an amenable number.

2582125131805 is a deficient number, since it is larger than the sum of its proper divisors (516425026367).

2582125131805 is an equidigital number, since it uses as much as digits as its factorization.

2582125131805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516425026366.

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 2582125131805 in words is "two trillion, five hundred eighty-two billion, one hundred twenty-five million, one hundred thirty-one thousand, eight hundred five".